:root {
    /* Cores claras */
    --tap-green: #00a651;      /* Verde TAP */
    --tap-green-dark: #008c44; /* Verde TAP mais escuro para hover */
    --tap-red: #ee1d23;        /* Vermelho TAP */
    --tap-red-dark: #d41920;   /* Vermelho TAP mais escuro para hover */
    --background-color: #f8f9fa;
    --surface-color: #ffffff;
    --text-color: #202124;
    --error-color: var(--tap-red);
    --success-color: var(--tap-green);
    --border-color: #e8eaed;
    --hover-color: #f1f3f4;
    
    /* Cores escuras */
    --dark-background: #1a1a1a;
    --dark-surface: #2d2d2d;
    --dark-text: #ffffff;
    --dark-border: #404040;
    --dark-hover: #3d3d3d;
}

body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 450px;
    padding: 2rem;
    background: var(--surface-color);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1), 
                0 1px 3px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s;
    border-top: 4px solid;
    border-image: linear-gradient(to right, var(--tap-green) 50%, var(--tap-red) 50%) 1;
}

.title {
    color: var(--text-color);
    font-size: 2rem;
    font-weight: 500;
    text-align: center;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid #e8eaed;
    border-radius: 8px;
    background-color: var(--surface-color);
    transition: all 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--tap-green);
    box-shadow: 0 0 0 3px rgba(0, 166, 81, 0.2);
}

.btn {
    width: 100%;
    padding: 0.875rem;
    font-size: 1rem;
    font-weight: 500;
    color: white;
    background-color: var(--tap-green);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn:hover {
    background-color: var(--tap-green-dark);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.btn:active {
    transform: translateY(1px);
}

.btn:disabled {
    background-color: #dadce0;
    cursor: not-allowed;
    box-shadow: none;
}

.error-message {
    color: var(--tap-red);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.success-message {
    color: var(--tap-green);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

@media (max-width: 480px) {
    .container {
        margin: 1rem;
        padding: 1.5rem;
    }

    .title {
        font-size: 1.75rem;
    }
}

.aircraft-info {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.aircraft-info p {
    margin: 0.5rem 0;
    color: var(--text-color);
}

.panels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.panel-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: var(--surface-color);
    border: 2px solid #e8eaed;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    gap: 0.5rem;
}

.panel-button:hover {
    border-color: var(--tap-green);
    background-color: #f8f9fa;
    transform: translateY(-2px);
}

.panel-button .material-icons {
    font-size: 2rem;
    color: var(--tap-green);
}

.btn-secondary {
    background-color: #f1f3f4;
    color: var(--text-color);
    border: 1px solid #dadce0;
}

.btn-secondary:hover {
    background-color: #e8eaed;
    border-color: #dadce0;
}

.btn + .btn {
    margin-top: 1rem;
}

/* Tema escuro */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, var(--dark-background) 0%, #000000 100%);
        color: var(--dark-text);
    }

    .container {
        background: var(--dark-surface);
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    }

    .form-control {
        background-color: var(--dark-surface);
        border-color: var(--dark-border);
        color: var(--dark-text);
    }

    .form-control:focus {
        border-color: var(--tap-green);
        box-shadow: 0 0 0 3px rgba(0, 166, 81, 0.3);
    }

    .btn-secondary {
        background-color: var(--dark-hover);
        color: var(--dark-text);
        border-color: var(--dark-border);
    }

    .btn-secondary:hover {
        background-color: var(--dark-border);
    }

    .panel-button {
        background: var(--dark-surface);
        border-color: var(--dark-border);
        color: var(--dark-text);
    }

    .panel-button:hover {
        background: var(--dark-hover);
        border-color: var(--tap-green);
    }
}

/* Status de conexão */
.connection-status {
    position: fixed;
    bottom: 0.5rem;
    right: 1rem;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    background: var(--surface-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.connection-status .material-icons {
    font-size: 1rem;
}

.connection-status.local {
    background: #e8f5e9;
    color: #2e7d32;
}

.connection-status.network {
    background: #e3f2fd;
    color: #1565c0;
}

.connection-status.internet {
    background: #fff3e0;
    color: #f57c00;
}

/* Toast notifications */
.toast {
    position: fixed;
    top: 1rem;
    right: 1rem;
    padding: 1rem;
    border-radius: 8px;
    background: var(--surface-color);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 1000;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    background: #e8f5e9;
    color: #2e7d32;
}

.toast.error {
    background: #ffebee;
    color: #c62828;
}

.toast.info {
    background: #e3f2fd;
    color: #1565c0;
}

/* User info */
.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--hover-color);
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.badge.admin {
    background: var(--tap-green);
    color: white;
}

.badge.supervisor {
    background: #2196f3;
    color: white;
}

.badge.user {
    background: #757575;
    color: white;
}

/* Melhorias nos botões */
.btn {
    margin-bottom: 1rem;
}

.btn:last-child {
    margin-bottom: 0;
}

.btn .material-icons {
    font-size: 1.2rem;
}

/* Melhorias nos selects */
select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24'%3E%3Cpath d='M7 10l5 5 5-5z' fill='%23666'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    padding-right: 2.5rem;
}

select.form-control:disabled {
    background-color: #f5f5f5;
    cursor: not-allowed;
}

/* Melhorias na responsividade */
@media (max-width: 480px) {
    .container {
        margin: 1rem;
        padding: 1.5rem;
        max-width: calc(100% - 2rem);
    }

    .title {
        font-size: 1.5rem;
    }

    .form-group {
        margin-bottom: 1rem;
    }

    .btn {
        padding: 0.75rem;
    }

    .connection-status {
        font-size: 0.75rem;
        padding: 0.375rem 0.75rem;
    }
}

/* Tema escuro */
@media (prefers-color-scheme: dark) {
    select.form-control {
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24'%3E%3Cpath d='M7 10l5 5 5-5z' fill='%23fff'/%3E%3C/svg%3E");
    }

    select.form-control:disabled {
        background-color: var(--dark-hover);
    }

    .user-info {
        background: var(--dark-hover);
    }
}